.font-styles {
  font-family: "Source Code Pro", Consolas, monaco, monospace;
  font-size: 18px; 
  line-height: 1.5; 
  font-weight: 400; 
}

body{
  position: relative;
  font-family: "Source Code Pro", Consolas, monaco, monospace;
  font-size: 18px; 
  line-height: 1.5; 
  font-weight: 400; 
  color: #7AC143;
  background-color:  #eee;
  padding: 20px;
}

h4 {
  font-size: 18px;
}